Pamida (like a Wal Mart) had a sale on a 3 gal portable air compressor. They will run pneumaticroofing hammers, so they are of value to me. They had them for $100.00 each approximately.So, I bought two of them. One for the shop and one for the house. That way I did not have to carry the one back and fourth, or walk out to the shop. Really a good investment (and I am too lazy to walk out to the shop sometimes). They had a smaller one for $50.00 but it was junk. I bought that first and played with it... and it was garbage.

Check Harbor Freight for a good air compressor. They have them on sale there too.